I went out at 5:30 this morning to give blocking up the bottom entrance another try. It was around 70 degrees and the hive was as busy as it is during the day. Tons of pollen coming in. One bee that scurried in was almost solid blue. Her back looked like a bruise.
You disturb their foraging badly with your experiments. Bees are not earned that.
Let them fly. Main thing is that they fly. They need good airflow too to dry up the nectar.